20706102 has 48 divisors (see below), whose sum is σ = 47915712. Its totient is φ = 6439680.

The previous prime is 20706071. The next prime is 20706121. The reversal of 20706102 is 20160702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47827 + ... + 48257.

It is an arithmetic number, because the mean of its divisors is an integer number (998244).

Almost surely, 2^20706102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20706102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23957856).

20706102 is an abundant number, since it is smaller than the sum of its proper divisors (27209610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20706102 is a wasteful number, since it uses less digits than its factorization.

20706102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20706102 is about 4550.3958069601. The cubic root of 20706102 is about 274.5993150938.

Adding to 20706102 its reverse (20160702), we get a palindrome (40866804).

The spelling of 20706102 in words is "twenty million, seven hundred six thousand, one hundred two".